Core capping machine



March 1, 1932. L. GERDERES 1,847,557

CORE CAPPING MACHINE Filed D60- 24, 1930 2 Sheets-Sheet l WITNESS: INVENTOR Laws [3 erf'daras.

W is ATTORNEY March 1, 1932. L. GERDERES 1,847,557

CORE CAPPING MACHINE WITNESS: INVENTOR .Lmuls Gardenia.

Patented Mar. 1, 1932 PATENT OFFICE 7 Louis ennmtnns, or rmrnnnrrnra, rEmrsrLvAm ocean CAI-PING MACH NE Application filed llecember 24, 1930.. Serial No. 504,546.

This invention relates to core capping machines, and has for an object to provide a device adaptedto maintain a core in the proper position to receivea cap, the base of which shall be accurately perpendicular to the axis of the core.

It is well known, that a step in the testing of pavements, such for instance as cement pavement, consists in removing a core from the pavements and subjecting the core to a crushing test. To" properly conduct this crushing test, it is necessary that the end of the core'shall be truly and accurately perpendicular to the axis of the core, which condition does not exist as the core is removed from the pavement. I g

It is the purpose of the present machine, therefore, to provide a cap upon the end of the core as removed, which shall accurately cated by arrow 3 at Figure 1, but with a part.

presenta plane surface axis of the core.

The invention comprises a clamp properly proportioned to clamp about the core and to maintain the'core movably with its axis accurately vertically and to provide a mold for the receipt of a cementitious material into perpendicular to the which the end of the core is inserted to become associated therewith, such cementitious material'being so maintained that when the setting of' the cementitious material hasbeen completed, it shall properly adhere to the core and present aplane end accurately perpendic ular to the axis of the core.

The invention is directed to other objects and possesses other features of novelty and advantage, some of which, together with the foregoing, will be hereinafter more fully set forth.

In the drawings:

Figure 1 is a view of the device in side elevation,

Figure 2 is a view of the device in top plan,

Figure 3 is a view in end elevation as'indiof the mold ring broken away,

Figure 4 is an enlarged detail view taken on line 4-4 of Figure 1,

Figure 5 is a plan view of the mold ring,

Figure 6 is a detail view in end elevation of the operating lever, and

Figure 7.is a viewof a. core with the cap applied thereto by theme of the present device.

Like characters of reference indicate correspending parts throughout the several views. The mechanism which forms the subject matter of thisapplication comprises a base 10 which willhave preferably a plane top upon which is erectedapillar 11. This pillar 11 ispreferablyof"T-formation in cross sece0 tion, as shown more particularly at Figure 2 and is secured to the base in any improved manner as by the use of the angles12, upon the sides, and the angle 13 in front. I Pivoted to the pillar 11 are the arms 14 and 15, suchpivoting being at the pivoting points 16 and 17 ,respectively.

, To the ends of the arms 14 and 15, opposite their pivots, a clamp is attached. The clamp comprises segments 18 and 19 hinged together at 20.' Atthe ends of the segments opposite the hinge, a tensioning means is provided comprising the arms 21, pivoted at 22 to the 28 and 29, having cars 30 and 31' between 86 which the-ends of the arms are pivoted re spectively at 32 and 32'.

The arms 14 and 15, being of identical length, and thepivot points 16 and 17 being vertically alined, it follows that the pivots 82 and 32'. will remain in vertical alinement irrespective of'thej angular position of the arms 14 and 15. To vary the angular position of the arms',1a lever33 is provided, have ing a roller 34 engaging under thev arm 15. This lever 34 is rigidly attached toa pipe section 35, journaled in the ears 36,.and is pro vided at'opposite-ends with cut-out notches 37.' A'crank arm 38 is: provided havinga pintle 39 properly p'roportioned tobe' inserted into either endlofthe pipe section 35, and having lugs, 40 properly proportioned to engageeither pairof notches 37. When'in serted from eitherside, a washer 40 anda collar pin 40! maintain it in position. i

Located upon the table 10 is a ring 41 positioned by a plurality of pins 42, upstanding from the table so that it shall be in accurate axial alinement with the clamp when lowered to dotted line position, as shown at Figure 1. This ring 41 is circular and open at both top and bottom, but is formedtapered as indicated at 48. p r

In operation, the core 44 is clamped by the manipulation of the screw 24, and so adjusted, that it shall'occupy the required position relative to the ring 41. It is now raised and the ring 41 is filled with the required cementitious material whereupon, the clamp is lowered to introduce the lower'end of the core into such cementitious material. After the cementitious'material has set to form the cap 45, as shown in Figure 7, it is removed from the ring and from the clamp, and is further employed for testing in the usual and well known manner.

For convenience of operation, the organization maintained in stationary position by the employment of fasteners which may be in the form shown at 46 as bolts, having offset fingers 47 inserted through perforations in the flanges of the base 10 and passing through the bench or other body 48 supplied with nuts 49.

Of course, the core capping machine, herein illustrated, may be modified in various ways without departing "from the invention herein set forth and hereinafter claimed.

The invention is hereby claimed as follows: i v I 1. A core capping machine comprising a base, a ring removably mounted upon the base, a circular 'clamp disposed above the ring, and means to move the clamp downwardly into juXta-position with the ring retaining the perpendicularity of the axisof the V clamp continuously relative to the base.

.2. A core capping-machine comprising a base. a cementmold mounted upon the base, a pillar mounted upon the base spaced from the mold, parallel arms pivoted to the pillar and extending toward the position of the mold, a clamp mounted upon the ends of the arms opposite the pivots, said clamp mounting including pivotal points for the arms in parallelism with'the first named pivot points, and means to manually raise and lower the clamp relative to the mold.

4. A core capping machine comprising a base, a pillar erected upon the base and providing pivot points in alinement perpendicular to the base, parallel arms pivoted at the pivot points and having pivots at their opposite ends in alinement perpendicular to the base, a clamp carried by said last mentioned pivots and including. a band having its axis perpendicular to the base, means to raise and lower the arms and the clamp relative to the base, and a cement retaining ring mounted upon the base concentric with and adjacent to the lowermost position of the clamp.

5. A core capping machine comprising a base, a pillar erected upon the base and providing alined pivot points perpendicular to the base, arms pivoted at said pivot points andhaving at their opposite points pivots in alinement perpendicularto the base, a clamp carried by the arms and connected at said pivot points, a lever mounted beneath the lowermost arm and provided with a roller engaging the underside of said arm, and a crank arm removably connected with and to manually operate said first mentioned arm.

6. A core capping machinecomprising .a base, a pillar erected upon the base, arms pivoted to said pillar and extending therefrom over the base, a clamp carried by the ends of the arms opposite their pivots, a lever mounted beneath the lowermost arm, said mounting comprising a tube inserted through said arm and fulcrumed in upstanding ears, a roller carried by said lever'in engagement with the lowermost arm, and a, crank adapted to be inserted into the tube at either side. and having means for engagement therewith to prevent rotation relative thereto. I

7. A core-capping machine comprising a base, a clamp, means to raise and lower the clamp relative tothe base with itsaxis remaining perpendicular to the base,,a ring having its inner Walls tapered, and means to maintain the ring removably uponthe base adjacent to and concentric with the lowermost position of the clamp.

In testimony whereof I name to this specification.

ouis meanness.

have signed my oted to thepillar upon pivot points perpen- Ii dicular to the base, a clamp mounted upon the ends of the armsopposite their pivots, saidclamp mountingincluding pivot points parallel with the first mentioned pivot points,

means to open and close the clamp, means to raise and lower the clamp, upon the arms as supporting structures, and a cement mold positioned upon the base beneaththe lowermost limit of movement of theclamp. 

